按照GB/T17189-2007《水力机械（水轮机、蓄能泵和水泵水轮机）振动和脉动现场测试规程》规定，下图为轴伸贯流式机组形式。<br /> <img src="https://nimg.ppkao.com/2019-04/wanxiaokui/2019041213514449251.jpg?sign=c103afa245353dcc854c11b391f2729b&t=62d5a20b" />